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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 LT |
5 | */ |
6 | #ifndef __XFS_MOUNT_H__ | |
7 | #define __XFS_MOUNT_H__ | |
8 | ||
ad223e60 | 9 | struct xlog; |
1da177e4 | 10 | struct xfs_inode; |
2a82b8be | 11 | struct xfs_mru_cache; |
5163f95a | 12 | struct xfs_nameops; |
82fa9012 | 13 | struct xfs_ail; |
7d095257 | 14 | struct xfs_quotainfo; |
32c5483a | 15 | struct xfs_dir_ops; |
0650b554 | 16 | struct xfs_da_geometry; |
7d095257 | 17 | |
055388a3 DC |
18 | /* dynamic preallocation free space thresholds, 5% down to 1% */ |
19 | enum { | |
20 | XFS_LOWSP_1_PCNT = 0, | |
21 | XFS_LOWSP_2_PCNT, | |
22 | XFS_LOWSP_3_PCNT, | |
23 | XFS_LOWSP_4_PCNT, | |
24 | XFS_LOWSP_5_PCNT, | |
25 | XFS_LOWSP_MAX, | |
26 | }; | |
27 | ||
192852be CM |
28 | /* |
29 | * Error Configuration | |
30 | * | |
31 | * Error classes define the subsystem the configuration belongs to. | |
32 | * Error numbers define the errors that are configurable. | |
33 | */ | |
34 | enum { | |
ffd40ef6 | 35 | XFS_ERR_METADATA, |
192852be CM |
36 | XFS_ERR_CLASS_MAX, |
37 | }; | |
38 | enum { | |
ffd40ef6 | 39 | XFS_ERR_DEFAULT, |
e0a431b3 CM |
40 | XFS_ERR_EIO, |
41 | XFS_ERR_ENOSPC, | |
42 | XFS_ERR_ENODEV, | |
192852be CM |
43 | XFS_ERR_ERRNO_MAX, |
44 | }; | |
45 | ||
a5ea70d2 CM |
46 | #define XFS_ERR_RETRY_FOREVER -1 |
47 | ||
77169812 ES |
48 | /* |
49 | * Although retry_timeout is in jiffies which is normally an unsigned long, | |
50 | * we limit the retry timeout to 86400 seconds, or one day. So even a | |
51 | * signed 32-bit long is sufficient for a HZ value up to 24855. Making it | |
52 | * signed lets us store the special "-1" value, meaning retry forever. | |
53 | */ | |
192852be CM |
54 | struct xfs_error_cfg { |
55 | struct xfs_kobj kobj; | |
56 | int max_retries; | |
77169812 | 57 | long retry_timeout; /* in jiffies, -1 = infinite */ |
192852be CM |
58 | }; |
59 | ||
1da177e4 | 60 | typedef struct xfs_mount { |
b267ce99 | 61 | struct super_block *m_super; |
1da177e4 | 62 | xfs_tid_t m_tid; /* next unused tid for fs */ |
6772c1f1 DW |
63 | |
64 | /* | |
65 | * Bitsets of per-fs metadata that have been checked and/or are sick. | |
66 | * Callers must hold m_sb_lock to access these two fields. | |
67 | */ | |
68 | uint8_t m_fs_checked; | |
69 | uint8_t m_fs_sick; | |
70 | /* | |
71 | * Bitsets of rt metadata that have been checked and/or are sick. | |
72 | * Callers must hold m_sb_lock to access this field. | |
73 | */ | |
74 | uint8_t m_rt_checked; | |
75 | uint8_t m_rt_sick; | |
76 | ||
82fa9012 | 77 | struct xfs_ail *m_ail; /* fs active log item list */ |
501ab323 DC |
78 | |
79 | struct xfs_sb m_sb; /* copy of fs superblock */ | |
3685c2a1 | 80 | spinlock_t m_sb_lock; /* sb counter lock */ |
501ab323 | 81 | struct percpu_counter m_icount; /* allocated inodes counter */ |
e88b64ea | 82 | struct percpu_counter m_ifree; /* free inodes counter */ |
0d485ada | 83 | struct percpu_counter m_fdblocks; /* free block counter */ |
501ab323 | 84 | |
1da177e4 LT |
85 | struct xfs_buf *m_sb_bp; /* buffer for superblock */ |
86 | char *m_fsname; /* filesystem name */ | |
87 | int m_fsname_len; /* strlen of fs name */ | |
fc1f8c1c NS |
88 | char *m_rtname; /* realtime device name */ |
89 | char *m_logname; /* external log device name */ | |
1da177e4 LT |
90 | int m_bsize; /* fs logical block size */ |
91 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ | |
92 | xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ | |
36e41eeb | 93 | spinlock_t m_agirotor_lock;/* .. and lock protecting it */ |
1da177e4 | 94 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ |
1da177e4 LT |
95 | uint m_readio_log; /* min read size log bytes */ |
96 | uint m_readio_blocks; /* min read size blocks */ | |
97 | uint m_writeio_log; /* min write size log bytes */ | |
98 | uint m_writeio_blocks; /* min write size blocks */ | |
0650b554 DC |
99 | struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ |
100 | struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ | |
ad223e60 | 101 | struct xlog *m_log; /* log specific stuff */ |
1da177e4 LT |
102 | int m_logbufs; /* number of log buffers */ |
103 | int m_logbsize; /* size of each log buffer */ | |
104 | uint m_rsumlevels; /* rt summary levels */ | |
105 | uint m_rsumsize; /* size of rt summary, bytes */ | |
355e3532 OS |
106 | /* |
107 | * Optional cache of rt summary level per bitmap block with the | |
108 | * invariant that m_rsum_cache[bbno] <= the minimum i for which | |
109 | * rsum[i][bbno] != 0. Reads and writes are serialized by the rsumip | |
110 | * inode lock. | |
111 | */ | |
112 | uint8_t *m_rsum_cache; | |
1da177e4 LT |
113 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ |
114 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ | |
115 | struct xfs_inode *m_rootip; /* pointer to root directory */ | |
116 | struct xfs_quotainfo *m_quotainfo; /* disk quota information */ | |
117 | xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ | |
118 | xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ | |
119 | xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ | |
c8ce540d DW |
120 | uint8_t m_blkbit_log; /* blocklog + NBBY */ |
121 | uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ | |
122 | uint8_t m_agno_log; /* log #ag's */ | |
123 | uint8_t m_agino_log; /* #bits for agino in inum */ | |
8f80587b | 124 | uint m_inode_cluster_size;/* min inode buf size */ |
83dcdb44 DW |
125 | unsigned int m_inodes_per_cluster; |
126 | unsigned int m_blocks_per_cluster; | |
c1b4a321 DW |
127 | unsigned int m_cluster_align; |
128 | unsigned int m_cluster_align_inodes; | |
1da177e4 LT |
129 | uint m_blockmask; /* sb_blocksize-1 */ |
130 | uint m_blockwsize; /* sb_blocksize in words */ | |
131 | uint m_blockwmask; /* blockwsize-1 */ | |
60197e8d CH |
132 | uint m_alloc_mxr[2]; /* max alloc btree records */ |
133 | uint m_alloc_mnr[2]; /* min alloc btree records */ | |
134 | uint m_bmap_dmxr[2]; /* max bmap btree records */ | |
135 | uint m_bmap_dmnr[2]; /* min bmap btree records */ | |
136 | uint m_inobt_mxr[2]; /* max inobt btree records */ | |
137 | uint m_inobt_mnr[2]; /* min inobt btree records */ | |
035e00ac DW |
138 | uint m_rmap_mxr[2]; /* max rmap btree records */ |
139 | uint m_rmap_mnr[2]; /* min rmap btree records */ | |
1946b91c DW |
140 | uint m_refc_mxr[2]; /* max refc btree records */ |
141 | uint m_refc_mnr[2]; /* min refc btree records */ | |
1da177e4 LT |
142 | uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ |
143 | uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ | |
0d87e656 | 144 | uint m_in_maxlevels; /* max inobt btree levels. */ |
035e00ac | 145 | uint m_rmap_maxlevels; /* max rmap btree levels */ |
1946b91c | 146 | uint m_refc_maxlevels; /* max refcount btree level */ |
8018026e | 147 | xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ |
52548852 DW |
148 | uint m_alloc_set_aside; /* space we can't use */ |
149 | uint m_ag_max_usable; /* max space per AG */ | |
1c1c6ebc DC |
150 | struct radix_tree_root m_perag_tree; /* per-ag accounting info */ |
151 | spinlock_t m_perag_lock; /* lock for m_perag_tree */ | |
cc92e7ac | 152 | struct mutex m_growlock; /* growfs mutex */ |
1da177e4 | 153 | int m_fixedfsid[2]; /* unchanged for life of FS */ |
c8ce540d | 154 | uint64_t m_flags; /* global mount flags */ |
e1f6ca11 | 155 | bool m_finobt_nores; /* no per-AG finobt resv. */ |
1da177e4 LT |
156 | int m_ialloc_inos; /* inodes in inode allocation */ |
157 | int m_ialloc_blks; /* blocks in inode allocation */ | |
066a1884 BF |
158 | int m_ialloc_min_blks;/* min blocks in sparse inode |
159 | * allocation */ | |
1da177e4 LT |
160 | int m_inoalign_mask;/* mask sb_inoalignmt if used */ |
161 | uint m_qflags; /* quota status flags */ | |
0eadd102 | 162 | struct xfs_trans_resv m_resv; /* precomputed res values */ |
c8ce540d DW |
163 | uint64_t m_maxicount; /* maximum inode count */ |
164 | uint64_t m_resblks; /* total reserved blocks */ | |
165 | uint64_t m_resblks_avail;/* available reserved blocks */ | |
166 | uint64_t m_resblks_save; /* reserved blks @ remount,ro */ | |
1da177e4 LT |
167 | int m_dalign; /* stripe unit */ |
168 | int m_swidth; /* stripe width */ | |
c41564b5 | 169 | int m_sinoalign; /* stripe unit inode alignment */ |
c8ce540d | 170 | uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ |
5163f95a | 171 | const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */ |
32c5483a | 172 | const struct xfs_dir_ops *m_dir_inode_ops; /* vector of dir inode ops */ |
4bceb18f | 173 | const struct xfs_dir_ops *m_nondir_inode_ops; /* !dir inode ops */ |
1da177e4 | 174 | uint m_chsize; /* size of next field */ |
1da177e4 | 175 | atomic_t m_active_trans; /* number trans frozen */ |
2a82b8be | 176 | struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ |
a7b339f1 | 177 | struct delayed_work m_reclaim_work; /* background inode reclaim */ |
579b62fa BF |
178 | struct delayed_work m_eofblocks_work; /* background eof blocks |
179 | trimming */ | |
83104d44 DW |
180 | struct delayed_work m_cowblocks_work; /* background cow blocks |
181 | trimming */ | |
61e63ecb | 182 | bool m_update_sb; /* sb needs update in mount */ |
055388a3 DC |
183 | int64_t m_low_space[XFS_LOWSP_MAX]; |
184 | /* low free space thresholds */ | |
a31b1d3d | 185 | struct xfs_kobj m_kobj; |
192852be | 186 | struct xfs_kobj m_error_kobj; |
ffd40ef6 | 187 | struct xfs_kobj m_error_meta_kobj; |
192852be | 188 | struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; |
225e4635 | 189 | struct xstats m_stats; /* per-fs stats */ |
aa6bf01d | 190 | |
78c931b8 | 191 | struct workqueue_struct *m_buf_workqueue; |
aa6bf01d | 192 | struct workqueue_struct *m_unwritten_workqueue; |
4c2d542f | 193 | struct workqueue_struct *m_cil_workqueue; |
5889608d DC |
194 | struct workqueue_struct *m_reclaim_workqueue; |
195 | struct workqueue_struct *m_log_workqueue; | |
579b62fa | 196 | struct workqueue_struct *m_eofblocks_workqueue; |
696a5620 | 197 | struct workqueue_struct *m_sync_workqueue; |
52785112 CH |
198 | |
199 | /* | |
200 | * Generation of the filesysyem layout. This is incremented by each | |
201 | * growfs, and used by the pNFS server to ensure the client updates | |
202 | * its view of the block device once it gets a layout that might | |
203 | * reference the newly added blocks. Does not need to be persistent | |
204 | * as long as we only allow file system size increments, but if we | |
205 | * ever support shrinks it would have to be persisted in addition | |
206 | * to various other kinds of pain inflicted on the pNFS server. | |
207 | */ | |
c8ce540d | 208 | uint32_t m_generation; |
801cc4e1 | 209 | |
66ae56a5 | 210 | bool m_always_cow; |
e6b3bb78 | 211 | bool m_fail_unmount; |
801cc4e1 | 212 | #ifdef DEBUG |
31965ef3 DW |
213 | /* |
214 | * Frequency with which errors are injected. Replaces xfs_etest; the | |
215 | * value stored in here is the inverse of the frequency with which the | |
216 | * error triggers. 1 = always, 2 = half the time, etc. | |
217 | */ | |
218 | unsigned int *m_errortag; | |
c6840101 | 219 | struct xfs_kobj m_errortag_kobj; |
801cc4e1 | 220 | #endif |
1da177e4 LT |
221 | } xfs_mount_t; |
222 | ||
223 | /* | |
224 | * Flags for m_flags. | |
225 | */ | |
92821e2b | 226 | #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops |
1da177e4 LT |
227 | must be synchronous except |
228 | for space allocations */ | |
e6b3bb78 | 229 | #define XFS_MOUNT_UNMOUNTING (1ULL << 1) /* filesystem is unmounting */ |
92821e2b | 230 | #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) |
e718eeb4 | 231 | #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem |
1da177e4 LT |
232 | operations, typically for |
233 | disk errors in metadata */ | |
e84661aa | 234 | #define XFS_MOUNT_DISCARD (1ULL << 5) /* discard unused blocks */ |
e718eeb4 | 235 | #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment |
1da177e4 | 236 | allocations */ |
13059ff0 | 237 | #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ |
bd186aa9 | 238 | #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ |
e718eeb4 | 239 | #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ |
e718eeb4 | 240 | #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ |
12c3f05c ES |
241 | #define XFS_MOUNT_SMALL_INUMS (1ULL << 14) /* user wants 32bit inodes */ |
242 | #define XFS_MOUNT_32BITINODES (1ULL << 15) /* inode32 allocator active */ | |
e718eeb4 | 243 | #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ |
1bd960ee | 244 | #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/ |
e718eeb4 | 245 | #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width |
1da177e4 | 246 | * allocation */ |
bd186aa9 | 247 | #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ |
e718eeb4 NS |
248 | #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ |
249 | #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred | |
e8c8b3a7 | 250 | * I/O size in stat() */ |
2a82b8be DC |
251 | #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams |
252 | allocator */ | |
7c12f296 | 253 | #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */ |
e8c8b3a7 | 254 | |
cbe4dab1 DC |
255 | #define XFS_MOUNT_DAX (1ULL << 62) /* TEST ONLY! */ |
256 | ||
1da177e4 LT |
257 | |
258 | /* | |
259 | * Default minimum read and write sizes. | |
260 | */ | |
261 | #define XFS_READIO_LOG_LARGE 16 | |
262 | #define XFS_WRITEIO_LOG_LARGE 16 | |
263 | ||
264 | /* | |
1f443ad7 NS |
265 | * Max and min values for mount-option defined I/O |
266 | * preallocation sizes. | |
1da177e4 | 267 | */ |
1f443ad7 | 268 | #define XFS_MAX_IO_LOG 30 /* 1G */ |
1da177e4 LT |
269 | #define XFS_MIN_IO_LOG PAGE_SHIFT |
270 | ||
271 | /* | |
272 | * Synchronous read and write sizes. This should be | |
273 | * better for NFSv2 wsync filesystems. | |
274 | */ | |
9da096fd MP |
275 | #define XFS_WSYNC_READIO_LOG 15 /* 32k */ |
276 | #define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */ | |
1da177e4 | 277 | |
e8c8b3a7 DC |
278 | /* |
279 | * Allow large block sizes to be reported to userspace programs if the | |
556b8b16 | 280 | * "largeio" mount option is used. |
e8c8b3a7 DC |
281 | * |
282 | * If compatibility mode is specified, simply return the basic unit of caching | |
283 | * so that we don't get inefficient read/modify/write I/O from user apps. | |
284 | * Otherwise.... | |
285 | * | |
286 | * If the underlying volume is a stripe, then return the stripe width in bytes | |
287 | * as the recommended I/O size. It is not a stripe and we've set a default | |
288 | * buffered I/O size, return that, otherwise return the compat default. | |
289 | */ | |
290 | static inline unsigned long | |
291 | xfs_preferred_iosize(xfs_mount_t *mp) | |
292 | { | |
293 | if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) | |
09cbfeaf | 294 | return PAGE_SIZE; |
e8c8b3a7 DC |
295 | return (mp->m_swidth ? |
296 | (mp->m_swidth << mp->m_sb.sb_blocklog) : | |
297 | ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? | |
9bb54cb5 | 298 | (1 << (int)max(mp->m_readio_log, mp->m_writeio_log)) : |
09cbfeaf | 299 | PAGE_SIZE)); |
e8c8b3a7 DC |
300 | } |
301 | ||
92821e2b DC |
302 | #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ |
303 | ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) | |
1da177e4 | 304 | #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) |
745f6919 CH |
305 | void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, |
306 | int lnnum); | |
1da177e4 | 307 | #define xfs_force_shutdown(m,f) \ |
745f6919 | 308 | xfs_do_force_shutdown(m, f, __FILE__, __LINE__) |
1da177e4 | 309 | |
2b5decd0 CH |
310 | #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ |
311 | #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ | |
312 | #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */ | |
313 | #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */ | |
314 | #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */ | |
315 | #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */ | |
316 | ||
1da177e4 LT |
317 | /* |
318 | * Flags for xfs_mountfs | |
319 | */ | |
764d1f89 | 320 | #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ |
1da177e4 | 321 | |
a844f451 NS |
322 | static inline xfs_agnumber_t |
323 | xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 324 | { |
4f1adf33 | 325 | xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); |
a844f451 NS |
326 | do_div(ld, mp->m_sb.sb_agblocks); |
327 | return (xfs_agnumber_t) ld; | |
1da177e4 LT |
328 | } |
329 | ||
a844f451 NS |
330 | static inline xfs_agblock_t |
331 | xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 332 | { |
4f1adf33 | 333 | xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); |
a844f451 | 334 | return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); |
1da177e4 LT |
335 | } |
336 | ||
3fd129b6 DW |
337 | /* per-AG block reservation data structures*/ |
338 | enum xfs_ag_resv_type { | |
339 | XFS_AG_RESV_NONE = 0, | |
0ab32086 | 340 | XFS_AG_RESV_AGFL, |
3fd129b6 | 341 | XFS_AG_RESV_METADATA, |
21592863 | 342 | XFS_AG_RESV_RMAPBT, |
3fd129b6 DW |
343 | }; |
344 | ||
345 | struct xfs_ag_resv { | |
346 | /* number of blocks originally reserved here */ | |
347 | xfs_extlen_t ar_orig_reserved; | |
348 | /* number of blocks reserved here */ | |
349 | xfs_extlen_t ar_reserved; | |
350 | /* number of blocks originally asked for */ | |
351 | xfs_extlen_t ar_asked; | |
352 | }; | |
353 | ||
9356fe22 DC |
354 | /* |
355 | * Per-ag incore structure, copies of information in agf and agi, to improve the | |
4fb6e8ad | 356 | * performance of allocation group selection. |
9356fe22 DC |
357 | */ |
358 | typedef struct xfs_perag { | |
359 | struct xfs_mount *pag_mount; /* owner filesystem */ | |
360 | xfs_agnumber_t pag_agno; /* AG this structure belongs to */ | |
361 | atomic_t pag_ref; /* perag reference count */ | |
362 | char pagf_init; /* this agf's entry is initialized */ | |
363 | char pagi_init; /* this agi's entry is initialized */ | |
364 | char pagf_metadata; /* the agf is preferred to be metadata */ | |
365 | char pagi_inodeok; /* The agi is ok for inodes */ | |
c8ce540d | 366 | uint8_t pagf_levels[XFS_BTNUM_AGF]; |
9356fe22 | 367 | /* # of levels in bno & cnt btree */ |
a27ba260 | 368 | bool pagf_agflreset; /* agfl requires reset before use */ |
c8ce540d | 369 | uint32_t pagf_flcount; /* count of blocks in freelist */ |
9356fe22 DC |
370 | xfs_extlen_t pagf_freeblks; /* total free blocks */ |
371 | xfs_extlen_t pagf_longest; /* longest free space */ | |
c8ce540d | 372 | uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */ |
9356fe22 DC |
373 | xfs_agino_t pagi_freecount; /* number of free inodes */ |
374 | xfs_agino_t pagi_count; /* number of allocated inodes */ | |
375 | ||
376 | /* | |
377 | * Inode allocation search lookup optimisation. | |
378 | * If the pagino matches, the search for new inodes | |
379 | * doesn't need to search the near ones again straight away | |
380 | */ | |
381 | xfs_agino_t pagl_pagino; | |
382 | xfs_agino_t pagl_leftrec; | |
383 | xfs_agino_t pagl_rightrec; | |
6772c1f1 DW |
384 | |
385 | /* | |
386 | * Bitsets of per-ag metadata that have been checked and/or are sick. | |
387 | * Callers should hold pag_state_lock before accessing this field. | |
388 | */ | |
389 | uint16_t pag_checked; | |
390 | uint16_t pag_sick; | |
391 | spinlock_t pag_state_lock; | |
392 | ||
9356fe22 DC |
393 | spinlock_t pagb_lock; /* lock for pagb_tree */ |
394 | struct rb_root pagb_tree; /* ordered tree of busy extents */ | |
ebf55872 CH |
395 | unsigned int pagb_gen; /* generation count for pagb_tree */ |
396 | wait_queue_head_t pagb_wait; /* woken when pagb_gen changes */ | |
9356fe22 DC |
397 | |
398 | atomic_t pagf_fstrms; /* # of filestreams active in this AG */ | |
399 | ||
400 | spinlock_t pag_ici_lock; /* incore inode cache lock */ | |
401 | struct radix_tree_root pag_ici_root; /* incore inode cache root */ | |
402 | int pag_ici_reclaimable; /* reclaimable inodes */ | |
403 | struct mutex pag_ici_reclaim_lock; /* serialisation point */ | |
404 | unsigned long pag_ici_reclaim_cursor; /* reclaim restart point */ | |
405 | ||
406 | /* buffer cache index */ | |
6031e73a LS |
407 | spinlock_t pag_buf_lock; /* lock for pag_buf_hash */ |
408 | struct rhashtable pag_buf_hash; | |
9356fe22 DC |
409 | |
410 | /* for rcu-safe freeing */ | |
411 | struct rcu_head rcu_head; | |
412 | int pagb_count; /* pagb slots in use */ | |
3fd129b6 DW |
413 | |
414 | /* Blocks reserved for all kinds of metadata. */ | |
415 | struct xfs_ag_resv pag_meta_resv; | |
21592863 BF |
416 | /* Blocks reserved for the reverse mapping btree. */ |
417 | struct xfs_ag_resv pag_rmapbt_resv; | |
46eeb521 DW |
418 | |
419 | /* reference count */ | |
c8ce540d | 420 | uint8_t pagf_refcount_level; |
9b247179 DW |
421 | |
422 | /* | |
423 | * Unlinked inode information. This incore information reflects | |
424 | * data stored in the AGI, so callers must hold the AGI buffer lock | |
425 | * or have some other means to control concurrency. | |
426 | */ | |
427 | struct rhashtable pagi_unlinked_hash; | |
9356fe22 DC |
428 | } xfs_perag_t; |
429 | ||
3fd129b6 DW |
430 | static inline struct xfs_ag_resv * |
431 | xfs_perag_resv( | |
432 | struct xfs_perag *pag, | |
433 | enum xfs_ag_resv_type type) | |
434 | { | |
435 | switch (type) { | |
436 | case XFS_AG_RESV_METADATA: | |
437 | return &pag->pag_meta_resv; | |
21592863 BF |
438 | case XFS_AG_RESV_RMAPBT: |
439 | return &pag->pag_rmapbt_resv; | |
3fd129b6 DW |
440 | default: |
441 | return NULL; | |
442 | } | |
443 | } | |
444 | ||
6031e73a LS |
445 | int xfs_buf_hash_init(xfs_perag_t *pag); |
446 | void xfs_buf_hash_destroy(xfs_perag_t *pag); | |
447 | ||
af3b6382 | 448 | extern void xfs_uuid_table_free(void); |
adab0f67 | 449 | extern int xfs_log_sbcount(xfs_mount_t *); |
c8ce540d | 450 | extern uint64_t xfs_default_resblks(xfs_mount_t *mp); |
4249023a | 451 | extern int xfs_mountfs(xfs_mount_t *mp); |
ff55068c DC |
452 | extern int xfs_initialize_perag(xfs_mount_t *mp, xfs_agnumber_t agcount, |
453 | xfs_agnumber_t *maxagi); | |
41b5c2e7 | 454 | extern void xfs_unmountfs(xfs_mount_t *); |
964aa8d9 | 455 | |
501ab323 | 456 | extern int xfs_mod_icount(struct xfs_mount *mp, int64_t delta); |
e88b64ea | 457 | extern int xfs_mod_ifree(struct xfs_mount *mp, int64_t delta); |
0d485ada DC |
458 | extern int xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta, |
459 | bool reserved); | |
bab98bbe DC |
460 | extern int xfs_mod_frextents(struct xfs_mount *mp, int64_t delta); |
461 | ||
1da177e4 | 462 | extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); |
764d1f89 | 463 | extern int xfs_readsb(xfs_mount_t *, int); |
1da177e4 | 464 | extern void xfs_freesb(xfs_mount_t *); |
91ee575f | 465 | extern bool xfs_fs_writable(struct xfs_mount *mp, int level); |
c8ce540d | 466 | extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); |
1da177e4 | 467 | |
d7658d48 CH |
468 | extern int xfs_dev_is_read_only(struct xfs_mount *, char *); |
469 | ||
055388a3 DC |
470 | extern void xfs_set_low_space_thresholds(struct xfs_mount *); |
471 | ||
3fbbbea3 DC |
472 | int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, |
473 | xfs_off_t count_fsb); | |
474 | ||
df309390 CM |
475 | struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, |
476 | int error_class, int error); | |
f467cad9 | 477 | void xfs_force_summary_recalc(struct xfs_mount *mp); |
df309390 | 478 | |
1da177e4 | 479 | #endif /* __XFS_MOUNT_H__ */ |